Project Grudge

Summary

Project Grudge succeeded Project Sign and continued Air Force review of UFO reports. The program emphasized explanation and classification of reports through available intelligence, aircraft, balloon, astronomical, and misidentification categories.

Origin

Established after Project Sign to continue Air Force flying saucer evaluation under a more skeptical administrative posture.

Scope

Reviewed incoming UFO reports, prepared public and internal explanations, and maintained the Air Force reporting channel.

Key personnel

Air Force intelligence staff assigned to UFO report handling at Wright-Patterson and related commands.

Termination

Superseded by Project Blue Book after the Air Force reorganized the investigation program in 1952.

Current status

Historical Air Force project; link records only when the source names Grudge or its report chain.